Unused imports in locks.py.

diff --git a/tornado/locks.py b/tornado/locks.py
index 1833b04f44695ada951aca46301158ab11da1c93..9338c8535ccc193a6ccf42f14ac23ff78f615588 100644 (file)
--- a/tornado/locks.py
+++ b/tornado/locks.py
@@ -18,7 +18,7 @@ __all__ = ['Condition']
 
 import collections
 
-from tornado import concurrent, gen, ioloop
+from tornado import ioloop
 from tornado.concurrent import Future